Bag machine



Sept. 10, 1940. A. KOPPEL 2,214,502

BAG MACHINE Filed Jan. 18, 1939 9 Sheets-Sheet l sept. 1o, v1940. A. KOPPEL 2,214,502

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BAG MACHINE Filed Jan. 18, 1939 9 Sheets-Sheet 8 Q; J wel; .9@

Sept. l0, 1940.

BAG MAGHINE Filed Jan. 18, 1939 9 Sheets-Sheet 9 Inventor Attorney.;

Patented Sept. 10, `194() UNITED STATES PATENT CFFICE BAG MACHINE Aubrey Koppel, Montreal, Quebec, Canada Application January 18, 1939, Serial No. 251,654

22 Claims.

The present invention relates to improvements in bag machines and more particularly to machines for turning and inserting liners into bags.

An object of the invention is the provision of a bag machine of generally improved design.

` Another object of the invention is the provision of a bag machine which will completely turn the bag. A furthery object of the invention is the provision of a bag machine of the aforesaid character which is capable of inserting a liner in a bag during the-turning operation.

Still another object of the invention is the provision of a bag machine of the above character which is adjustable for handling bags of varying dimensions.

Still another object of the invention is the provision of a bag machine of the aforesaid character which is rapid, efcient and reliable in operation.

Still another object of the invention is the provision of a bag machine of the above character which is compact in construction.

Other objects and advantages of the invention will become apparent as the description progresses.

In the accompanying drawings forming a part of this specification and in which like reference characters are employed to designate corresponding parts throughout the same:

Figure 1 is an elevation of one side of the machine,

Figure 2 is a top plan view of the machine,

Figure 3 is an elevation of the opposite side of the machine,

Figure 4 is a vertical section through the machine,

Figure 5 is a similar view showing the mechanism in a different position, 1

Figure 6 is a similar view showing the mechanism in another position,

Figure 7'is a similar view with the mechanism in vanother position,

Figure 8 is a similar view with the mechanism in still another position,

Figure 9 is an enlarged end view ofA the bag feeding mechanism,

' Figure l0 is an enlarged section taken on the line lU--lll of Figure 9,

Figure 11 is a section taken on the line II-II of Figure 10,

Figure 12 is a section taken on the line I2-I2 of Figure '7,

Figure 13 is a similar View with the mechanism in a diierent position,

Figure 14 is an enlarged section taken on the line I4-I4 of Figure l2,

Figure 15 is an enlarged fragmentary section taken substantially on the line I5-i5 of Figure 1,

Figure 16 is a detailed elevation viewed from 5 line |6-I6 of Figure'l,

Figure 17 is a section taken on the line II-li of Figure 16, J

Figure 18 is an enlarged transverse section 10 taken substantially on the line I8-I8 of Figure 3,

Figure 19 is a vertical section taken through the lowerpart of themachine,

Figure 20 is an enlarged detail View of part of 15 Athe mechanism shown in Figure 19,

Figure 21 is a similar View with the mechanism in a different position,

Figure 22 is a fragmentary section taken on the line 22-22 of Figure 18, 20

Figure 23 is a section taken substantially on the line 23-23 of Figure 15,

Figure 24 Vis a section taken on the line 24-24 of Figure 23,

Figure 25 is a fragmentary top plan view of the 25 machine,

Figure 26 is a rfragmentary side elevational view of the same Awith parts removed,

Figure 27 is a similar View with the mechanism in a different position, 30

Figure 28 is a similar view with the mechanism in another position,

Figure 29 is an end elevational view of part of the machine, and

Figure 30 is an enlarged detail elevation of 35 part of the mechanism.

Referring to the drawings, wherein for the purpose of illustration is shown' a preferred embodiment of the invention, M generally desigshaft 42 beside a pulley 43 also secured on the shaft and having a drive belt 44 trained there- 50 over.

On the shaft 36 are secured a pair of complementary sleeves 46 each formed with a socket 41 pivotally supporting therein an arm 48 extending radially of the shaft. At the outer end of each 55 of these arms i's formed an arcuate member 49 consisting of a rod curved longitudinally on a positions.

radius about the shaft and curved arcuately in cross section to provide a channel 49 having rollers 50 at the ends thereof. The complementary pair of members 49 are yieldingly held in laterally spread apart positions by means of mechanism embodying a cylinder 5| formed transversely at one side of the socket 41 having a plunger 52 slidable therein. This plunger carries a pin 53 projecting through a slot in the cylinder wall and coniined between two spaced lugs 54 extending radially from a collar 55 xed on the arm 48. A compression coil spring 56 mounted in one end of the cylinder tends to thrust the plunger toward the opposite end of the cylinder and thereby maintain the arms in such position that the main body portions of the rods 49 assume relatively diverging posiitons, that is, with the outer end portions arranged in their extreme transversely separated or spread apart A pin 51 secured to the inner end of each arm 48 and projecting through a slot in the socket 41 is held against the outer end of a slide rod 58 mounted in a bearing sleeve 59 and disposed so that its inner end is held in contact With a circular cam 60 formed with a recess 6I. When the slide member 58 is in the recess 6I it allows the spring 56 to turn the arm 48 so that the free end of each rod 49 is moved inwardly o f the frame whereby these rods are caused to assume contracted or relatively adjacent positions. At all other times the slide members act against these springs to dispose the rods with the outer end portions in spread apart positions.

In socket 63 extending radially from each sleeve 46 is secured a spindle 64 having a sleeve 65 rotatably iitted on its extension. At the side of the sleeve 65 is connected a curved angle bar 66 having a laterally projecting iiange 61 shaped to provide acam. A T-bar 68, fastened to each angle bar, extends in a position approximately radial to the shaft 36 and carries on its outer end a guide element 69 having a longitudinal groove at its inner side, the said guides being arranged to assume positions in advance of and laterally of the free ends of ,the members 49. 'Ihese grooved guides are curved on a radius corresponding to that of the rod members. The sleeve 65 has formed thereon a transversely arranged cylinder 10 in which is mounted a slidable plunger 1I yieldingly pressed in one direction by a, coil spring 12. A pin, projecting from the plunger, extends to a position between a pair of lugs `13 on the xed socket 63 so that the guide elements 69 are yieldingly urged to assume transversely spread apart positions, as shown at Figure 2.

The main shaft 36 also carries thereon an oscillatory U-s'haped frame F' having radial side arms 15 and a cross bar 16 arranged transversely thereof. At spaced positions on the cross bar are mounted a pair of blocks 11 each having a spring 18 iitted in a bore therein disposed to engage a pin 19 extending through a slot in the block 11 and attached to an eye-fltting 80. This eye is pivotally supported on a pivot bolt 8| and carries in its aperture the inner end portion of a rod member 82, having a diminishing taper toward its free end which terminates in a blade-shaped end formation 83. The action of the spring 1|! against the pin, which is arranged o centre on the eye iitting, tends to turn the eye so that the complementary pair of rods 82 will be disposed with their free ends in spread apart positions. A collar 84 secured on the inner end projection of each of the rods 82 carries an adjustable lstop piece 85 arranged to contact with the cross bar 16 for regulating the diverging arrangement of the rods 62, as shown to advantage at Figures 15, 16 and 17. On the outer end of each pivot bolt 54 is secured an arm 86 carrying a roller 81 on its free end portion, for a purpose which will be later described. At the inner side of each of the frame arms 15 is mounted a roller 88 arranged in position to contact with the flanges 61 for moving guide members 69 to inward positions at predetermined periods during the operative cycle, as will be described hereinafter. Likewise, to the inner sides of the frame arms 15 are secured the circular cam elements 60.

To an upstanding bracket 90 on the main frame M are secured a pair of elongated cam elements 9| shaped and mounted to engage the rollers 81 for swinging the members 82 to inward contracted positions when the frame F is elevated.

Another auxiliary U-shaped frame D is adapted to oscillate about the main shaft and embodies radial side arms 93 connecting at the outer ends with a cross bar 94, formed with an offset 95 intermediate its ends. The inner portions of the arms 93 are fitted to slide longitudinally in a pair of slotted holder sections 96 rotatably mounted on the shaft 36 and carrying a pair of fixed laterally projecting pins 91 and 98. In an inclined guide channel 99, secured to each side of the main frame, is slidably mounted a block carrying a laterally projecting pin I 0I and. a. vertically disposed arcuate arm |02 disposed to bear against the pin 91. On the inner face of each of the gears 31 are secured a pair of complementary cam sections |03 and |04 shaped to provide a cam way therebetween, adapted to intermittently engage the pin I 0I to slide the block |00 and the arm |02 to inward positions. To an extension |06 of each holder section 96 is attached one end of an adjustable connecting rod I 01, the opposite end of the rod being connected by a pivot |08 to the outer end of an arm |09 forming part of the checking or damping device IIO. To the pivot pin |08 is also connected the outer end of a tension spring III attached to a bracket I I2 on the frame and tending to normally swing the frame D to an upward position. When the pin 91 is moved to a retracted position, it contacts with the edge of a cam II3 iixed on the main frame M shaped to effect a predetermined radial movement of the frame D.

To the offset portion 95 of the frame D are hingedly connected a pair of spaced depending holder ears H5 urged to diverging positions by springs II6. At the outeryedge of each of the ears is mounted a fastening spring II1 bearing against the same and adapted to releasably secure a bag liner thereon. As the frame D is swung to its downward position, each pin 98 thereon slides over a pivoted arcuate guide cam I I8 yieldingly held in a predetermined position by a coil spring and over the outer vertical edge of a block II9 mounted in fixed position on each side of the main frame and thereafter automatically trips'a pivoted catch element |20 which is provided with a notch I2I. A tension spring |22 functions to yieldingly hold the catch in upstanding position so that the notch therein will engage the pin 98 to lock the frame D in position. When the previously described mechanism functions to slide the frame D radially inward, each of the pins 98 disengages the notch of the catch and slides horizontally against the bottom edge of the block I I9 so as to restrain upward swinging movement of the frameD unti1 the holding elements ||6 have moved to predetermined radial positions.

At the front of the frame is provided mechanism for initially positioning and holding the bag and constitutes a fixed shaft section |24 secured rigidly in one sidevof the frame and extending transversely, as shown to advantage at Figures 7 to 9 inclusive. The inner end of this shaft section terminates adjacent an` aligned complementary section |25 rotatably journalled in the Opposite side of the frame and having secured thereon a slotted genera wheel |26. The slots of the wheel |26 are designed to engagetwo closely disposed rollers or pins |21 on the margin of a co-acting wheel |28, the raised boss on the latter wheel being formed with a pair of corresponding clearance recesses so that the wheel |28 will drive the adjacent wheel |26 periodically through a halfturn movement. On the rotary shaft section |25 is fastened a transversely arranged' cross bar |29 engaging, in sockets at the ends, a pair of rods 38 arranged parallel with the shaft sections and connecting withlthe ends of a. pair of complementary cross bars |3| rotatably mounted in spaced relation on the fixed section |24. To each of the bars |3| is fastened a cross arm |32, having fixed right angularly projecting jaws |33 on its ends, and carrying a pair of sleeves |34 slidably mounted thereon. 'I'hese sleeves are yieldably urged to retracted inward positions on the arm by tension springs |35 and each has a laterally projecting jaw |36 formed thereonadapted to assume co-acting relation with the adjacent jaw |33 fixed on the arm. A leaf-'spring |31, secured on each sleeve, is arranged to press against the inner edge of each jaw |36 to releasably grip a, bag therebetween. Upon rotation of the arm actuating mechanism, one of the jaws |36 on each arm is moved to an extended position, closed against the complementary fixed jaw, while the opposite movable jaw is retracted by contact with the edge of an Velongated `cam |38 secured on the fixed shaft section' |24, as shown to advantage at Figure l0.

The wheel |28 is fixed on a stub shaft |40 journalled on the frame which also carries a sprocket wheel 4|. This shaft is driven by an endless chain |42 trained over the sprocket |4| and the sprocket on the shaft 39. Y y

The oscillatory movement of the frame F is effected, in the present example of the machine construction, by a pair of slotted levers |44 provided at each side of the main frame.` Each of these levers is disposed to swing about a stub shaft |45 projecting laterally of the frame and carries in the vslot thereof a longitudinally slidable block |46 which provides a bearing for a pin |41 attached to the gear 31. To the outer end of each lever |44 is pivotally connected a link bar |48 having its opposite end pivotally connected to the side. of the frame F.

On each side section of the main frame, at the bottom thereof, is provided a horizontally extending endless chain |50 trained over sprocket wheels |5|, said chain having connection with a crank bar |52 ro-tatably connected with a plate |53. This plate is mounted to slide along a pair of parallel guide rods |54. VSecured to and extending between the complementary plates |54 are a pair of transversely extending rods |55 and |56, the latter having secured on its intermediate portion a pair of angular jaw elements |51 formed so that the free ends are operable to assume co-operative gripping relationship with the collars |58 secured on the rod |55. At the ends the respective angular bearing edges of the lever extension |60. This mechanism, which forms Vthe bag removing means, may be driven by chain and sprocket connections with the sprocket 40, as shown, or byother suitable means.

The various parts of the machine are prefer- 'ably counterbalanced, .as illustrated, or in any preferred manner.

'I'he operation of the machine is as follows:

A bag B, such as the jute bag commonlyl used for packing sugar, in the inside-out arrangement in which it comes from the bagmanufacturing machine, is attached to the positioning mechanism by folding down the mouth or open end marginal portion and fitting the same over the jaws |33 and |36 with the gripping springs |31 clamped on the inner portion, as shown at Fig-V ures 5 and 6. The bag is thereafter carried on the rotary frame in an anti-clockwise half-turn movement and held in suspended position inwardly of the frame with the upwardly disposed mouth held in open position, as shown at Figure 4.

'I'he members 49, which are adapted to rotate continuously and at a uniform speed through a circular path, are arranged to enter the open bag. It is to be noted that immediately prior to entry into the bag in such take-off position, these members are caused to assume a contracted arrangement with the free ends disposed inward transversely of the frame, through the medium of the springs and control cam, and maintain such positions until the ends of the rods reach the bottom of the bag. At this point the springs act to yieldingly thrust the members against the sides of the bag and carry it in transversely stretched formation to a turning position. While the rods 49 move into the suspended bag ythe guides 69 are spread apart to pass exteriorly atthe sides thereof. l

During such operation, the oscillatory members 82 move through an upward arc from the position shown at Figure 4 to that shown at Figure 6 and, during the final stages of such movement,

are contracted through the medium of the engagement of the rollers 81 with the cams 9|. As the rods 82 swing upward, an operator hangs a bag liner L, such as the conventional cotton bag liner. on the projections or ears ||5 4with the mouth in upward open position. `The frame.

D is then moved radially inward by the cam mechanism and israpidly swung upward to the position shown at Figure 6, sliding the liner over the contracted rod members 82. members 82, with the liner thereon, are swung downwardly toward the approaching carrier Thereafter, the

members 49 and the guide elements 69 are moved arrangement by pushing the bag through its mouth and simultaneously inserting the liner L thereinto, as shown to advantage at Figures '77, 12 and 13. As a result-of this operation, the lined bag is transferred onto `the reversing members 82 with the margin of the liner projecting from the body, as shown. at Figure 13, due to the fact that the holding ears maintaintheir grip thereon during their turning operation. During this bag reversing operation, the rods 82- are urged to open spread apart positions due to release of the rollers 81 and the action of the springs 18.

After completion of the turning the reversing members advance the bag to the removal posi- :tion shown at Figure 8, at which time the bottoml projections of the levers |59 are brought into contact with the rear trip rods ISI, swinging the jaws to tightly grip the closed bottom-end of the lined bag between the ends of the jaws and the collars |58. The jaws are locked in gripping position by the depression of the arms |82 through the medium oi.' the springs attached thereto to engage one angular edge face of each lever extension |60, as clearlyl illustrated at Figure 21. Thereafter, the carrying plates |53 are slid toward the front of the frame, stripping the bag from the upwardly swinging rods 82 and depositing the bag in stacking position, preferably on a receiving truck, as illustrated at Figure 19. When the removing carrier mechanism reaches the forward end of its movement, the Jawsll are automatically released through the engagement of the levers |59 with the forward trip rods |6| which turn the rod I 56 to disengage the jaws. 'I'he jaws are held in such open or non-gripping positions by the pressure of the spring actuated arm |82 on the other angular edge face of the lever extensions |60, as shown at Figure 20, until the carriage reaches a position adjacent its extreme rearward bag engaging position. 'Il'his operative-,cycle is continued without interrupting the movement of the machine. y

Thus, the machine is adapted for turning an lining the bags in rapid succession 'and in a most eiiicient manner as the structure is such as to turn the bag with complete corner projection and with extension of the marginal liner mouth to enable convenient and eilicient filling.

It is to be understood that the form of my invention herein shown and described is to be taken as a preferred example of the same, and

Athat various changes as to the shape, size and arrangement of parts may be' resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. In a machine of the character described. means operable to carry a bag in an arcuate path, and means movable parallel with and in an opposite direction to said carrier means operable to engage the bag on the latter to turn and pickup the bag.

2. In a machine of the character described, means operable to carry a bag in an arcuate path, means movable parallel with and in an opposite direction to said carrier means operable to engage the bag on the latter to turn and pickup the bag, and means for removing the bag from the pick-up means.

3. In 'a bag machine, rotatable means adapted to enter and carry a bag through a portion of its movement, oscillatory means movable parallel with and in' an opposite direction to said carrier means operable to engage the bag at a predetermined position on the latter to turn and pickup the bag, and means operable to engage the bag to remove it from `the pick-up means and carry it to a stacking Position.

4. In a bag machine, a pair of members rotatable in a circular path adapted to enter and carry a bag from a take-o3 position, and a pair o! oscillatory members movable parallel with and in a direction opposite to the carrier members adapted to engage the bag on the latter to turn and pick-up the bag.

5. In a bag machine, a pair of members rotatable in a circular path adapted to enter and carry a bag from a take-off position, a pair of oscillatory members movable parallel with and in a direction opposite to the carrier members adapted to engage the bag on the latter to turn and pick-up the bag, and means adapted to engage the bag on the pick-upmembers to remove the same and carry it to a stacking position.

6. In a bag machina. means for positioning and holding a bag in open take-olf position, ro-

tary means operable to enterthe bag and carryv it from the take-of! position, oscillatory means movable parallel with and in a direction opposite to the carrier means adapted to engage the bag on the latter to turn and pick-up the bag, and means for removing the bag from theoscillatory means.

7. In a bag machine, means engageable with a bag adapted to dispose the same in an open takeoi position, a pair of members rotatable in a circular path adapted to enter the bag and carry it from the take-01T position, av pair of oscillatory members movable in positions parallel with and in an opposite direction to said Vcarrier members adapted to engage the `bag on the latter to turn and pick it up, and means for removing the bag and depositing the same in a stacking position.

8. In a bag machine, intermittently operable mechanism adapted to engage a.bag' and hold the same in open arrangement in a take-off position, a pair of rotary members operable to enter the bag and carry thel same in transversely stretched arrangement from the take-of! position, a pair of oscillatory members movable parallel with and in a direction opposite to the carrier members adapted to engage the bag on the latter to turn and pick-'up the bag, and means for positioning a liner on the oscillatory members prior to the bag turning movement thereof.

9. In a bag machine, the combination with means for turning a bag, of means for positioning a bag liner on the turning means whereby to cause said liner to be inserted into the bag body as the latter is turned.'

10. In a a bag machine, the combination of means for carrying 'a bag to a turning position, reversing means co-operable with said carrier means to turn the bag, and means for positioning and holding a bag liner on said reversing means whereby the liner will be inserted into the bag during the turning operation.

11. In a bag machine, the combination of means operable to enter a. bag and carry the same from a take-off holding position, complementary reversing means co-operable with the said carrier ymeans to eiect turning of the bag, and means operable to position and hold a liner on the revversing means whereby the linerf is inserted into the bag during the turning operation and a marginal portion of the open end of the liner will project beyond the mouth of the bag.

12. In a bag machine, rotary means Vadapted to enter and carry a bag from a take-olf position,

oscillatory means movable in co-operative relation.. and in opposite direction to said carrier means to turn and pick-up the bag, and means operable -to position and hold a liner on the oscillatory means whereby the liner will be positioned within the bag when the bag is turned.

13. In a bag machine, a frame, a rotary shaft journalled on the frame, a pair of arms secured to and extending radially from the shaft, a rod on the outer end of each arm curved on a radius referred to the shaft, means operable to yieldingly maintain the rods in open spread apart relation, and means operable to intermittently move the rods to adjacent contracted positions.

14. In a bag machine, a frame, a shaft journalled on the frame, an auxiliary frame mounted to oscillate about the shaft, a pair of rods curved on a radius referred to the shaft attached to the outer part of the said auxiliary frame, means for yieldingly maintaining the said rods in open spread apart relation, and means operable to periodically dispose the said rods in contracted relation.

15. In a bag machine, a main frame, a shaft journalled transversely on the frame, -an auxiliary frame mounted to oscillate about the said shaft, a pair of rods curved about the axis of the shaft attached to the said auxiliary frame, a second auxiliary :frame mounted to oscillate about the shaft and adjustable radially thereof, liner holding elements attached to the latter frame, means operable to periodically swing the liner holding frame, and means for releasably locking the said liner holding frame in liner receiving position.

16. In a b ag machine, means for carrying a bag arcuately from a take-off position, a pair of oscillatory members co-operable with the said carrier means to turn and pick-up the bag, and mechanism adapted to engage a liner and slide the same overthe oscillatory members whereby the liner will be inserted into the bag during the turning operation.

17. In a bag machine, means for carrying a bag arcuately from a take-off position, a pair of oscillatory members co-operable with the said carrier means to turn and pick-up the bag, an oscillatory frame having means for holding a liner in open arrangement, mechanism for adjusting the holder means 'to position Ythe liner in predetermined relation with the said members, means operable to periodically swing the said frame so as to slide the liner over the said members, and mechanism for releasably holding the frame in liner receiving position.

18. In a .bag machine, means for carrying a bag from a take-oi to a turning position, oscillatory means co-operable with the carrier means to turn and receive the bag thereon, and reciprocatory mechanism operable to grip an end portion of the bag on the oscillatory means whereby to strip the bag therefrom and carry the same to a stacking position.

19. In a bag machine, means for holding a bag in open position, rotary means operable to enter and carry the bag from said holding means, and means movable parallel with the said rotary carrier means adapted to engage and take up the bag.

20. In a bag machine, oscillatory means adapted to receive a bag' thereon after said bag is turned, and means for positioning a liner on said oscillatory means prior to its engagement with the bag.

21. In a bag machine, an oscillatory member,

a pair of complementary bag engaging elements mounted on the said member, means for yieldingly urging the said elements to diverging positions, and means for maintaining the said elements in contracted positions when the oscillatory member is in a predeterminedpart of its travel. l

22. In a bag machine, oscillatory means for turning and picking up a bag, and means for po-v sitioning and holding a liner on said oscillatory means.

AUBRE'Y KOPPEL. 

